Preparation method of reconstituted tobacco with composite fragrance and taste style

Abstract

The invention discloses a preparation method of reconstituted tobacco with a composite fragrant taste style. The preparation method comprises the following steps: (1) preparing a reconstituted tobacco base; (2) preparing a coating liquid; and (3) coating the reconstituted tobacco base. The reconstituted tobacco obtained by the preparation method disclosed by the invention has obvious contributions in the aspects of highlighting the composite aroma and taste style characteristics of cigarettes and improving the pungency, sweetness, elegance, richness, elegance and mellowness of the reconstituted tobacco; and the functionality of the reconstituted tobacco is improved.

Description

Technical Field

[0001] The invention relates to the field of reconstituted tobacco, and more specifically, to a method for preparing composite fragrant and tasty reconstituted tobacco. Background Art

[0002] Papermaking reconstituted tobacco has been developed for decades and has undergone several generations of upgrading. It has developed from the initial filling material to functional, characteristic, high-end, and material-oriented, so it plays an increasingly important role in cigarette formulas. Papermaking reconstituted tobacco is made by soaking and extracting raw materials such as tobacco dust and tobacco stems with water to obtain extracts and solid residues. The extracts are concentrated and flavored to obtain coating liquids, and the solid residues are pulped and made into sheet bases using an improved papermaking process. The sheet bases are coated with the coating liquid and dried to obtain the obtained product.

[0003] The powder forming process is to ultrafinely grind the internal and external raw materials of tobacco and then prepare the sheet base according to the conventional papermaking method for reconstituted tobacco preparation process. The ultrafine powder papermaking and forming process is used to obtain a high-absorbency, high-load sheet base, and after coating, the reconstituted tobacco is obtained. The reconstituted tobacco produced by the powder forming process has the obvious advantages of "high coating rate and high hot water soluble content".

[0004] Wine lees, also known as red lees, fermented grains, and dregs, are the remaining products after most of the starch in rice, wheat, sorghum and other cereal grains is utilized during brewing. Wine lees are rich in protein, starch, and organic acids, small peptides, soluble sugars and various functional substances produced during fermentation. There is no shortage of various flavor components in wine lees, and these flavor components can give reconstituted tobacco different wine aroma and flavor.

[0005] The present invention uses distiller's grains as raw materials to prepare composite fragrant and tasty reconstituted tobacco leaves; the invention aims to broaden the functional style characteristics of reconstituted tobacco leaves and explore new technologies and methods for applying natural distiller's grains raw materials in the field of reconstituted tobacco leaves. Summary of the invention

[0006] The present invention uses distiller's grains as raw materials, uses ultrafine grinding technology to prepare them into micro-ultrafine powder, and uses conventional papermaking process to prepare reconstructed tobacco leaves with a wine-flavored and flavorful composite flavor. The purpose of the present invention is to broaden the functional style characteristics of reconstructed tobacco leaves, explore new technologies and methods for applying natural distiller's grains raw materials in the field of reconstructed tobacco leaves, and is a method for preparing composite flavor reconstructed tobacco leaves. The product reconstructed tobacco leaves have obvious contributions in highlighting the composite flavor and taste characteristics of cigarettes, and in improving their spiciness, elegance, richness, elegance, and mellowness.

[0007] The technical solution of the present invention is as follows:

[0008] A method for preparing composite fragrant and flavorful reconstituted tobacco, comprising the following steps:

[0009] (1) extracting tobacco raw materials under certain conditions to obtain tobacco solid residue and tobacco extract;

[0010] (2) concentrating the tobacco extract to obtain a tobacco concentrate;

[0011] (3) beating the tobacco solid residue to obtain a pulp with a beating degree of 48-55°SR; adding (1-10) wt% of lees composite powder to the pulp, and then making and drying the pulp to obtain a slurry with a ration of (55-60) g / m 2 of reconstituted tobacco leaf base;

[0012] (4) placing the reconstituted tobacco leaf base at a constant temperature and humidity of (60±1)% and (22±1)°C for equilibration for more than 48 hours to obtain an equilibrated reconstituted tobacco leaf base;

[0013] (5) evenly coating the tobacco concentrate obtained in step (2) on the reconstituted tobacco leaf base obtained in step (4) at a coating rate of 38-45%;

[0014] (6) drying the reconstituted tobacco leaf base after coating in step (5) at 100-110° C. for 5-10 minutes;

[0015] (7) The dried reconstituted tobacco leaf base is equilibrated at a relative humidity of (60±1)% and a temperature of (22±1)°C for more than 48 hours to obtain a reconstituted tobacco leaf with a composite aroma and taste.

[0016] Alternatively, a method for preparing composite fragrant and flavorful reconstituted tobacco comprises the following steps:

[0017] (i) extracting tobacco raw materials under certain conditions to obtain tobacco solid residue and tobacco extract;

[0018] (ii) concentrating the tobacco extract to obtain a tobacco concentrate; adding (1-10) wt% of vinasse composite powder to the tobacco concentrate and mixing them evenly to obtain a mixed coating liquid;

[0019] (iii) beating the tobacco solid residue to obtain a pulp with a beating degree of 48-55°SR; papermaking and drying the pulp to obtain a quantitative (55-60) g / m 2 of reconstituted tobacco leaf base;

[0020] (iv) placing the reconstituted tobacco leaf base at a constant temperature and humidity of (60±1)% and (22±1)°C for 48 hours or more to obtain a balanced reconstituted tobacco leaf base;

[0021] (v) uniformly coating the mixed coating liquid obtained in step (ii) on the reconstituted tobacco leaf base obtained in step (iv) at a coating rate of 38-45%;

[0022] (vi) drying the reconstituted tobacco leaf base after coating in step (v) at 100-110° C. for 5-10 minutes;

[0023] (vii) balancing the dried reconstituted tobacco leaf base at a relative humidity of (60±1)% and a temperature of (22±1)°C for more than 48 hours to obtain reconstituted tobacco leaves with a composite aroma and taste.

[0024] Preferably, the tobacco raw material includes more than 50wt% of tobacco leaf fragments and remaining tobacco scraps; the extraction conditions of the tobacco extract are: the solvent is an ethanol solution containing 50wt% of ethanol, the temperature is 60-80°C, and the time is 60-90min.

[0025] Preferably, the concentration conditions of the tobacco concentrate are vacuum rotary evaporation concentration, temperature 45-60°C, vacuum degree 60-80mbar, rotation speed 30-60rad / min; the density of the tobacco concentrate is (1.180-1.220)g / cm 3 .

[0026] Preferably, the coating liquid is coated on the reconstituted tobacco leaf base under the following conditions: in a closed condition, the temperature does not exceed 45°C.

[0027] Preferably, the preparation method of the vinasse composite powder comprises the following steps:

[0028] (a) ultrafine grinding the vinasse raw material to obtain vinasse ultrafine powder of 100-200 mesh;

[0029] (b) mixing the fruity extract and the superfine vinasse powder evenly to obtain fruity vinasse powder;

[0030] (c) uniformly mixing the cooling agent and the fruity vinasse powder to obtain a cooling fruity vinasse powder;

[0031] (d) mixing the polysaccharide solution and the cool fruity wine lees powder evenly, and drying at 35-45° C. to obtain wine lees composite powder;

[0032] Preferably, the vinasse raw material is one or more of the vinasse of sauce-flavor, strong-flavor, light-flavor, rice-flavor, and phoenix-flavor types; the vinasse raw material is dried at 35-45° C. to a moisture content of (6-8) wt % before ultrafine grinding.

[0033] Preferably, the fruit flavor extract is one or more of black plum, peach, orange, mango, white peach, lychee, blueberry, lemon, watermelon, passion fruit, coconut, and honeydew melon extracts.

[0034] Preferably, the polysaccharide is tamarind gum or sodium carboxymethylcellulose.

[0035] Preferably, the tobacco raw material further comprises (1-10) wt% of base material, and the base material comprises spicy base material or tea-flavor base material.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] 1. The preparation method of reconstituted tobacco of the present invention uses for the first time a distiller's grains composite powder including a fruit flavor extract, a cooling agent and a polysaccharide; and uses it in reconstituted tobacco, which has a significant contribution to highlighting the composite aroma and taste style characteristics of cigarettes and enhancing their spiciness, sweetness, elegance, richness, elegance and mellowness; and improves the functionality of reconstituted tobacco.

[0038] 2. In the method for preparing reconstituted tobacco leaves of the present invention, the lees composite powder can be added during the preparation process of the reconstituted tobacco leaf base; or it can be prepared into a coating liquid and coated on the reconstituted tobacco leaf base; the effects in highlighting the composite aroma and taste style characteristics of cigarettes are basically the same; preferably, it is prepared into a coating liquid and coated on the reconstituted tobacco leaf base.

[0039] 3. The preparation method of reconstituted tobacco of the present invention uses polysaccharides (tamarind gum or sodium carboxymethyl cellulose) in the lees composite powder. During the processing of the reconstituted tobacco, the volatile components are wrapped by the polysaccharides, which can reduce the loss of volatile components such as wine aroma components, and highlight the obvious characteristics of the composite aroma and taste style of the cigarette.

[0040] 3. The preparation method of the reconstituted tobacco of the present invention also uses tobacco extract, which can enhance and supplement the loss of tobacco aroma and characteristic tone that is easily caused during the production and processing of the reconstituted tobacco.

[0041] 4. The method for preparing reconstituted tobacco leaves of the present invention uses tobacco waste as the raw material for reconstituted tobacco leaves, thereby saving costs and protecting the environment. DETAILED DESCRIPTION

[0042] The present invention is described below in conjunction with specific examples, but the embodiments of the present invention are not limited thereto. The experimental methods for which specific conditions are not specified in the examples are generally carried out according to conventional conditions and conditions described in the manual, or according to the conditions recommended by the manufacturer. The general equipment, materials, reagents, etc. used can be obtained from commercial channels unless otherwise specified. The raw materials required in the following examples and comparative examples are all commercially available.

[0043] A method for preparing composite fragrant and flavorful reconstituted tobacco, comprising the following steps:

[0044] (1) extracting tobacco raw materials under certain conditions to obtain tobacco solid residue and tobacco extract;

[0045] (2) concentrating the tobacco extract to obtain a tobacco concentrate;

[0046] (3) beating the tobacco solid residue to obtain a pulp with a beating degree of 48-55°SR; adding (1-10) wt% of lees composite powder to the pulp, and then making and drying the pulp to obtain a slurry with a ration of (55-60) g / m 2 of reconstituted tobacco leaf base;

[0047] (4) placing the reconstituted tobacco leaf base at a constant temperature and humidity of (60±1)% and (22±1)°C for 48 hours or more to obtain a balanced reconstituted tobacco leaf base;

[0048] (5) evenly coating the tobacco concentrate obtained in step (2) on the reconstituted tobacco leaf base obtained in step (4) at a coating rate of 38-45%;

[0049] (6) drying the reconstituted tobacco leaf base after coating in step (5) at 100-110° C. for 5-10 minutes;

[0050] (7) The dried reconstituted tobacco leaf base is equilibrated at a relative humidity of (60±1)% and a temperature of (22±1)°C for more than 48 hours to obtain a reconstituted tobacco leaf with a composite aroma and taste.

[0051] Alternatively, a method for preparing composite fragrant and flavorful reconstituted tobacco comprises the following steps:

[0052] (i) extracting tobacco raw materials under certain conditions to obtain tobacco solid residue and tobacco extract;

[0053] (ii) concentrating the tobacco extract to obtain a tobacco concentrate; adding (1-10) wt% of vinasse composite powder to the tobacco concentrate and mixing them evenly to obtain a mixed coating liquid;

[0054] (iii) beating the tobacco solid residue to obtain a pulp with a beating degree of 48-55°SR; papermaking and drying the pulp to obtain a quantitative (55-60) g / m 2 of reconstituted tobacco leaf base;

[0055] (iv) placing the reconstituted tobacco leaf base at a constant temperature and humidity of (60±1)% and (22±1)°C for 48 hours or more to obtain a balanced reconstituted tobacco leaf base;

[0056] (v) uniformly coating the mixed coating liquid obtained in step (ii) on the reconstituted tobacco leaf base obtained in step (iv) at a coating rate of 38-45%;

[0057] (vi) drying the reconstituted tobacco leaf base after coating in step (v) at 100-110° C. for 5-10 minutes;

[0058] (vii) balancing the dried reconstituted tobacco leaf base at a relative humidity of (60±1)% and a temperature of (22±1)°C for more than 48 hours to obtain reconstituted tobacco leaves with a composite aroma and taste.

[0059] The tobacco raw material includes more than 50wt% of tobacco leaf fragments and remaining tobacco scraps; the extraction conditions of the tobacco extract are: the solvent is an ethanol solution containing 50wt% of ethanol, the temperature is 60-80℃, and the time is 60-90min.

[0060] Preferably, the concentration conditions of the tobacco concentrate are vacuum rotary evaporation concentration, temperature 45-60°C, vacuum degree 60-80mbar, rotation speed 30-60rad / min; the density of the tobacco concentrate is (1.180-1.220)g / cm 3 .

[0061] The conditions for applying the coating liquid on the reconstituted tobacco leaf base are: under closed conditions, the temperature does not exceed 45°C.

[0062] The preparation method of the vinasse composite powder comprises the following steps:

[0063] (a) ultrafine grinding the vinasse raw material to obtain vinasse ultrafine powder of 100-200 mesh;

[0064] (b) mixing the fruity extract and the superfine vinasse powder evenly to obtain fruity vinasse powder;

[0065] (c) uniformly mixing the cooling agent and the fruity vinasse powder to obtain a cooling fruity vinasse powder;

[0066] (d) mixing the polysaccharide solution and the cool fruity wine lees powder evenly, and drying at 35-45° C. to obtain wine lees composite powder;

[0067] The lees raw material is one or more of sauce-flavored, strong-flavored, light-flavored, rice-flavored, and phoenix-flavored lees; the lees raw material is dried at 35-45° C. to a moisture content of (6-8) wt % before ultrafine grinding.

[0068] Among them, the fruit flavor extract is one or more of black plum, peach, orange, mango, white peach, lychee, blueberry, lemon, watermelon, passion fruit, coconut, and honeydew melon extracts.

[0069] Wherein, the polysaccharide is tamarind gum or sodium carboxymethyl cellulose.

[0070] The tobacco raw material also includes (1-10) wt% of base material, and the base material includes spicy base material or tea-flavor base material.

[0071] Example 1: Preparation of reconstituted tobacco leaves, the steps are as follows:

[0072] Step 1: drying 200 g of sorghum distiller's grains at 35-45° C. to a moisture content of less than 7% and then superfine grinding to obtain 200-mesh distiller's grains superfine powder;

[0073] Step 2: 10 g of black plum extract is evenly sprayed on the surface of the superfine lees powder, and mixed evenly to obtain lees composite powder A1; the cooling agent L-menthol is dissolved in ethanol to obtain a cooling agent solution with a mass fraction of 10%; the cooling agent solution is evenly sprayed on the surface of the lees composite powder A1 to obtain lees composite powder A2; a tamarind polysaccharide solution with a mass concentration of 1% is prepared, and the tamarind polysaccharide solution is evenly sprayed on the surface of the solid powder A3, mixed evenly, and dried at 40°C to obtain lees composite powder A3;

[0074] Step 3: 500 g of tobacco raw material (50% tobacco leaf fragments, 5 wt% cinnamon and clove powder, and the rest is tobacco scraps) is sealed and extracted in a 65° C. constant temperature water bath for 60 min; after the extraction is completed, the solid and liquid are separated to obtain tobacco solid residue and tobacco extract;

[0075] Step 4: Concentrate the tobacco extract to obtain tobacco concentrate; the concentration conditions are vacuum rotary evaporation concentration, temperature 45°C, vacuum degree 65mbar, rotation speed 60rad / min; the density is 1.200g / cm 3 Tobacco concentrate C1.

[0076] Step 5: The tobacco solid residue is pulped to obtain a pulp with a beating degree of 50°SR, and 5% of the lees composite powder A3 in step 3 is added to the pulp, and then papermaking and drying are performed to prepare a 60 g / m 2 The reconstituted tobacco leaf base B1 is placed in a constant temperature and humidity environment with a relative humidity of (60±1)% and a temperature of (22±1)°C for more than 48 hours to obtain a balanced reconstituted tobacco leaf base B2;

[0077] Step 6: The tobacco concentrate C1 is evenly coated on the reconstituted tobacco leaf base B2 at a temperature of 40° C. under a closed condition, with a coating rate of 40%;

[0078] Step 7: Dry the coated reconstituted tobacco leaf base at 100° C. for 10 minutes;

[0079] Step 8: The dried reconstituted tobacco leaf base is equilibrated at a relative humidity of 60% and a temperature of 22° C. for 50 hours to obtain composite fragrant and tasty reconstituted tobacco leaf R1.

[0080] Example 2: Preparation of reconstituted tobacco leaves, the steps are as follows:

[0081] Step 1: drying 200 g of sorghum distiller's grains at 35-45° C. to a moisture content of less than 7% and then superfine grinding to obtain 200-mesh distiller's grains superfine powder;

[0082] Step 2: 10 g of black plum extract is evenly sprayed on the surface of the superfine lees powder, and mixed evenly to obtain lees composite powder A1; the cooling agent L-menthol is dissolved in ethanol to obtain a cooling agent solution with a mass fraction of 10%; the cooling agent solution is evenly sprayed on the surface of the lees composite powder A1 to obtain lees composite powder A2; a tamarind polysaccharide solution with a mass concentration of 1% is prepared, and the tamarind polysaccharide solution is evenly sprayed on the surface of the solid powder A3, mixed evenly, and dried at 40°C to obtain lees composite powder A3;

[0083] Step 3: 500 g of tobacco raw material (50% tobacco leaf fragments, 5 wt% cinnamon and clove powder, and the rest is tobacco scraps) is sealed and extracted in a 65° C. constant temperature water bath for 60 min; after the extraction is completed, the solid and liquid are separated to obtain tobacco solid residue and tobacco extract;

[0084] Step 4: Concentrate the tobacco extract to obtain tobacco concentrate; the concentration conditions are vacuum rotary evaporation concentration, temperature 45°C, vacuum degree 65mbar, rotation speed 60rad / min; the density is 1.200g / cm 3 Tobacco concentrate C1; adding (1-10) wt% of vinasse composite powder A3 to the tobacco concentrate C1 and mixing evenly to obtain a mixed coating liquid C2;

[0085] Step 5: The tobacco solid residue is pulped to obtain a pulp with a beating degree of 50°SR, and then paper-made and dried to prepare a slurry with a basis weight of 60 g / m 2 The reconstituted tobacco leaf base B1 is placed in a constant temperature and humidity environment with a relative humidity of (60±1)% and a temperature of (22±1)°C for more than 48 hours to obtain a balanced reconstituted tobacco leaf base B2;

[0086] Step 6: The mixed coating liquid C2 is evenly coated on the reconstituted tobacco leaf base B2 under a closed condition at a temperature of 40° C., with a coating rate of 40%;

[0087] Step 7: Dry the coated reconstituted tobacco leaf base at 100° C. for 10 minutes;

[0088] Step 8: The dried reconstituted tobacco leaf base is equilibrated at a relative humidity of 60% and a temperature of 22° C. for 50 hours to obtain composite fragrant and tasty reconstituted tobacco leaf R2.

[0089] Comparative Example 1: Preparation of reconstituted tobacco leaves, the steps are as follows:

[0090] Step 1: extract 500 g of tobacco raw material (50% tobacco leaf fragments and the rest tobacco scraps) in a sealed constant temperature water bath at 65° C. for 60 min; after the extraction, separate the solid and liquid to obtain tobacco solid residue and tobacco extract;

[0091] Step 2: Concentrate the tobacco extract to obtain tobacco concentrate; the concentration conditions are vacuum rotary evaporation concentration, temperature 45°C, vacuum degree 65mbar, rotation speed 60rad / min; the density is 1.200g / cm 3 Tobacco concentrate C1.

[0092] Step 3: The tobacco solid residue is pulped to obtain a pulp with a beating degree of 50°SR, and then paper-made and dried to prepare a slurry with a basis weight of 60g / m 2 The reconstituted tobacco leaf base B1 is placed in a constant temperature and humidity environment with a relative humidity of (60±1)% and a temperature of (22±1)°C for more than 48 hours to obtain a balanced reconstituted tobacco leaf base B2;

[0093] Step 4: The tobacco concentrate C1 is evenly coated on the reconstituted tobacco leaf base B2 at a temperature of 40° C. under a closed condition, with a coating rate of 40%;

[0094] Step 7: Dry the coated reconstituted tobacco leaf base at 100° C. for 10 minutes;

[0095] Step 8: The dried reconstituted tobacco leaf base is equilibrated at a relative humidity of 60% and a temperature of 22° C. for 50 hours to obtain composite fragrant and tasty reconstituted tobacco leaf D1.

[0096] Comparative Example 2: Preparation of reconstituted tobacco leaves, the same as Example 1, except that the vinasse composite powder A3 does not contain tamarind polysaccharide, to obtain composite fragrant and tasty reconstituted tobacco leaves D2.

[0097] Sensory quality evaluation:

[0098] According to “YC / T 498-2014 Sensory Evaluation Method for Reconstituted Tobacco (Papermaking Method)”, nine experts with sensory evaluation qualifications were invited to conduct sensory quality evaluation on samples of reconstituted tobacco products and cut and rolled cigarettes. The results are shown in Table 1.

[0099] Table 1 Sensory quality evaluation results

[0100]

[0101] Note: J is a certain tobacco leaf group, J-1 is a tobacco leaf group blended with 5% R2, and J-2 is a tobacco leaf group blended with 10% R2.

[0102] As can be seen from Table 1, compared with the control sample D1, the addition of the superfine lees powder in the embodiment can obtain a reconstituted tobacco with a distinct composite aroma and taste; the aroma is rich, the smoke is delicate, the sweet feeling is good, the mouth is clean, and the sweetness is good.

[0103] It can also be seen from Table 1 that compared with the control sample D2, the composite aroma and flavor of the reconstituted tobacco leaves obtained in the embodiment are obvious due to the addition of tamarind polysaccharide. This may be because tamarind polysaccharide has a lot of branches, which can wrap the volatile material and aroma substances and form a dense film structure on the surface of the reconstituted tobacco leaves, effectively reducing the loss of volatile substances. The effect is better when the superfine powder of distiller's grains is prepared into a coating liquid and coated on the reconstituted tobacco leaf base.

[0104] Detection and analysis of aroma components: The above-mentioned reconstituted tobacco leaves were tested and the results are shown in Table 2.

[0105] Table 2 Aroma component content (mg / g)

[0106]

[0107] Note: “-” means not detected.

[0108] As can be seen from Table 2, the contents of ethyl acetate, ethyl hexanoate, 3-hydroxy-2-butanone, acetic acid, 2,3-butanediol, furfuryl alcohol, phenylethyl alcohol, furfural, benzyl alcohol and menthol are relatively high in the reconstituted tobacco leaves of Examples 1 and 2, but relatively low in D2; while in D1, only furfuryl alcohol, furfural and benzyl alcohol are detected. This shows that the lees composite powder of the present invention plays a very important role in reconstituted tobacco leaves; at the same time, the use of polysaccharides can effectively reduce the loss of flavor substances, and the effect of adding ultrafine powder of black plum lees in the coating liquid stage is better than adding it in the papermaking stage.

[0109] The above description is only used to introduce the specific implementation methods of the present invention in detail, but the technical solution proposed by the present invention is not limited to the above method. Without departing from the basic principles of the present technology, equivalent modifications and changes made by those skilled in the art to the technology proposed by the present invention should be included in the scope of the claims of the present invention.

Claims

1. A method for preparing composite fragrant and flavorful reconstituted tobacco, characterized in that: The steps include: (1) extracting tobacco raw materials under certain conditions to obtain tobacco solid residue and tobacco extract; (2) concentrating the tobacco extract to obtain a tobacco concentrate; (3) beating the tobacco solid residue to obtain a pulp with a beating degree of 48-55°SR; adding (1-10) wt% of lees composite powder to the pulp, and then making and drying the pulp to obtain a slurry with a ration of (55-60) g / m 2 of reconstituted tobacco leaf base; (4) placing the reconstituted tobacco leaf base at a constant temperature and humidity of (60±1)% and (22±1)°C for 48 hours or more to obtain a balanced reconstituted tobacco leaf base; (5) evenly coating the tobacco concentrate obtained in step (2) on the reconstituted tobacco leaf base obtained in step (4) at a coating rate of 38-45%; (6) drying the reconstituted tobacco leaf base after coating in step (5) at 100-110° C. for 5-10 minutes; (7) The dried reconstituted tobacco leaf base is equilibrated at a relative humidity of (60±1)% and a temperature of (22±1)°C for more than 48 hours to obtain a reconstituted tobacco leaf with a composite aroma and taste.

2. A method for preparing composite fragrant and flavorful reconstituted tobacco, characterized in that: The steps include: (i) extracting tobacco raw materials under certain conditions to obtain tobacco solid residue and tobacco extract; (ii) concentrating the tobacco extract to obtain a tobacco concentrate; adding (1-10) wt% of vinasse composite powder to the tobacco concentrate and mixing them evenly to obtain a mixed coating liquid; (iii) beating the tobacco solid residue to obtain a pulp with a beating degree of 48-55°SR; papermaking and drying the pulp to obtain a quantitative (55-60) g / m 2 of reconstituted tobacco leaf base; (iv) placing the reconstituted tobacco leaf base at a constant temperature and humidity of (60±1)% and (22±1)°C for 48 hours or more to obtain a balanced reconstituted tobacco leaf base; (v) uniformly coating the mixed coating liquid obtained in step (ii) on the reconstituted tobacco leaf base obtained in step (iv) at a coating rate of 38-45%; (vi) drying the reconstituted tobacco leaf base after coating in step (v) at 100-110° C. for 5-10 minutes; (vii) balancing the dried reconstituted tobacco leaf base at a relative humidity of (60±1)% and a temperature of (22±1)°C for more than 48 hours to obtain reconstituted tobacco leaves with a composite aroma and taste.

3. The preparation method according to claim 1 or 2, characterized in that: The tobacco raw material includes more than 50wt% of tobacco leaf fragments and remaining tobacco scraps; the extraction conditions of the tobacco extract are: the solvent is an ethanol solution containing 50wt% of ethanol, the temperature is 60-80℃, and the time is 60-90min.

4. The preparation method according to claim 1 or 2, characterized in that: The concentration conditions of the tobacco concentrate are vacuum rotary evaporation concentration, temperature 45-60°C, vacuum degree 60-80mbar, rotation speed 30-60rad / min; the density of the tobacco concentrate is (1.180-1.220)g / cm 3 .

5. The preparation method according to claim 1 or 2, characterized in that: The conditions for coating the coating liquid on the reconstituted tobacco leaf base are: in a closed condition, the temperature does not exceed 45°C.

6. The preparation method according to claim 1 or 2, characterized in that: The preparation method of vinasse composite powder comprises the following steps: (a) ultrafine grinding the vinasse raw material to obtain vinasse ultrafine powder of 100-200 mesh; (b) mixing the fruity extract and the superfine vinasse powder evenly to obtain fruity vinasse powder; (c) uniformly mixing the cooling agent and the fruity vinasse powder to obtain a cooling fruity vinasse powder; (d) The polysaccharide solution and the cool fruity wine lees powder are mixed evenly, and dried at 35-45° C. to obtain the wine lees composite powder.

7. The preparation method according to claim 5, characterized in that: The lees raw material is one or more of sauce-flavored, strong-flavored, light-flavored, rice-flavored and phoenix-flavored lees; before ultrafine grinding, the lees raw material is dried at (35-45)°C to a moisture content of (6-8) wt%.

8. The preparation method according to claim 5, characterized in that: The fruit flavor extract is one or more of black plum, peach, orange, mango, white peach, lychee, blueberry, lemon, watermelon, passion fruit, coconut, and honeydew melon extracts.

9. The preparation method according to claim 5, characterized in that: The polysaccharide is tamarind gum or sodium carboxymethyl cellulose.

10. The preparation method according to claim 1, characterized in that: The tobacco raw material also includes (1-10) wt% of base material, and the base material includes spicy base material or tea-flavor base material.

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